IPA: /ˌɪn.təˈtʃæn.əl/
KK: /ɪnˈtɜrˌtʃænəl/
Relating to or occurring between different channels.
The interchannel communication improved the efficiency of the network.
Interchannel → It is formed from "inter-" (meaning between) and "channel" (from Old French *canal*, meaning a waterway or conduit). The word describes something that exists or occurs between channels.
Think of something that exists 'between' ('inter-') two 'channels' — that's what interchannel means.